Was considering purchasing an old airport express and converting the power source to allow car use for airplay in the car, but then found this thing. Looks like a nano TP Link router that someone modified for the operating mode that is needed for car use. Good reviews on Amazon. Could see this fitting in the center console very nicely hooked to a cig lighter/usb power and 3.5mm aux.
http://www.amazon.com/AirEnabler-Ada...owViewpoints=1